#include <stdio.h>
#define SIZE 10
int sump(int *, int *);
int main(void)
{
    int marbles[SIZE] = {20, 10, 5, 39, 4, 16, 19, 26, 31, 20};
    long answer;
    answer = sump(marbles, marbles + SIZE - 1);
    printf("The total number of marbles of marbles is %ld", answer);
    return 0;
}

int sump(int *start, int *end)
{
    int total = 0;
    while(start <= end)
    {
        total += *start++;
    }
    return total;
}
